119 lines
4.0 KiB
C++
119 lines
4.0 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "sk_tool_utils.h"
|
|
#include "SkBitmapSource.h"
|
|
#include "SkOffsetImageFilter.h"
|
|
#include "gm.h"
|
|
|
|
#define WIDTH 600
|
|
#define HEIGHT 100
|
|
#define MARGIN 12
|
|
|
|
namespace skiagm {
|
|
|
|
class OffsetImageFilterGM : public GM {
|
|
public:
|
|
OffsetImageFilterGM() : fInitialized(false) {
|
|
this->setBGColor(0xFF000000);
|
|
}
|
|
|
|
protected:
|
|
virtual SkString onShortName() {
|
|
return SkString("offsetimagefilter");
|
|
}
|
|
|
|
void make_bitmap() {
|
|
fBitmap.allocN32Pixels(80, 80);
|
|
SkCanvas canvas(fBitmap);
|
|
canvas.clear(0x00000000);
|
|
SkPaint paint;
|
|
paint.setAntiAlias(true);
|
|
sk_tool_utils::set_portable_typeface(&paint);
|
|
paint.setColor(0xD000D000);
|
|
paint.setTextSize(SkIntToScalar(96));
|
|
const char* str = "e";
|
|
canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(65), paint);
|
|
}
|
|
|
|
virtual SkISize onISize() {
|
|
return SkISize::Make(WIDTH, HEIGHT);
|
|
}
|
|
|
|
void drawClippedBitmap(SkCanvas* canvas, const SkBitmap& bitmap, const SkPaint& paint, SkScalar scale, const SkIRect& cropRect) {
|
|
canvas->save();
|
|
SkRect clipRect = SkRect::MakeWH(
|
|
SkIntToScalar(bitmap.width()), SkIntToScalar(bitmap.height()));
|
|
canvas->clipRect(clipRect);
|
|
canvas->scale(scale, scale);
|
|
canvas->drawBitmap(bitmap, 0, 0, &paint);
|
|
canvas->restore();
|
|
SkPaint strokePaint;
|
|
strokePaint.setStyle(SkPaint::kStroke_Style);
|
|
strokePaint.setColor(SK_ColorRED);
|
|
|
|
// Draw a boundary rect around the intersection of the clip rect
|
|
// and crop rect.
|
|
SkMatrix scaleMatrix;
|
|
scaleMatrix.setScale(scale, scale);
|
|
SkRect cropRectFloat;
|
|
scaleMatrix.mapRect(&cropRectFloat, SkRect::Make(cropRect));
|
|
if (clipRect.intersect(cropRectFloat)) {
|
|
canvas->drawRect(clipRect, strokePaint);
|
|
}
|
|
}
|
|
|
|
virtual void onDraw(SkCanvas* canvas) {
|
|
if (!fInitialized) {
|
|
make_bitmap();
|
|
|
|
fCheckerboard.allocN32Pixels(80, 80);
|
|
SkCanvas checkerboardCanvas(fCheckerboard);
|
|
sk_tool_utils::draw_checkerboard(&checkerboardCanvas, 0xFFA0A0A0, 0xFF404040, 8);
|
|
|
|
fInitialized = true;
|
|
}
|
|
canvas->clear(0x00000000);
|
|
SkPaint paint;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
SkBitmap* bitmap = (i & 0x01) ? &fCheckerboard : &fBitmap;
|
|
SkIRect cropRect = SkIRect::MakeXYWH(i * 12,
|
|
i * 8,
|
|
bitmap->width() - i * 8,
|
|
bitmap->height() - i * 12);
|
|
SkImageFilter::CropRect rect(SkRect::Make(cropRect));
|
|
SkAutoTUnref<SkImageFilter> tileInput(SkBitmapSource::Create(*bitmap));
|
|
SkScalar dx = SkIntToScalar(i*5);
|
|
SkScalar dy = SkIntToScalar(i*10);
|
|
SkAutoTUnref<SkImageFilter> filter(
|
|
SkOffsetImageFilter::Create(dx, dy, tileInput, &rect));
|
|
paint.setImageFilter(filter);
|
|
drawClippedBitmap(canvas, *bitmap, paint, SK_Scalar1, cropRect);
|
|
canvas->translate(SkIntToScalar(bitmap->width() + MARGIN), 0);
|
|
}
|
|
|
|
SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100);
|
|
SkImageFilter::CropRect rect(SkRect::Make(cropRect));
|
|
SkAutoTUnref<SkImageFilter> filter(
|
|
SkOffsetImageFilter::Create(SkIntToScalar(-5), SkIntToScalar(-10), NULL, &rect));
|
|
paint.setImageFilter(filter);
|
|
drawClippedBitmap(canvas, fBitmap, paint, SkIntToScalar(2), cropRect);
|
|
}
|
|
private:
|
|
typedef GM INHERITED;
|
|
SkBitmap fBitmap, fCheckerboard;
|
|
bool fInitialized;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static GM* MyFactory(void*) { return new OffsetImageFilterGM; }
|
|
static GMRegistry reg(MyFactory);
|
|
|
|
}
|